blocks|key|4749730|text|使用export的childProcess.exec(command)+spawns+a+shell+then+executes+the+command+within+that+shell.使变量可用于shell的子进程，但不能用于其父进程。Node和从中调用Node的shell永远看不到该变量。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4749731|entityMap|0|LINK|mutability|MUTABLE|url|https://nodejs.org/api/all.html#child_process_child_process_exec_command_options_callback^0|2|6|9|Q|1X|7|10|1N|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]]|D|@$9|U|A|V|1|W]]|E|$]]|$1|F|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

<code>childProcess.exec(command)</code> <a href="https://nodejs.org/api/all.html#child_process_child_process_exec_command_options_callback" rel="nofollow noreferrer">spawns a shell then executes the <code>command</code> within that shell.</a> Using <code>export</code> makes variables available to child processes of the shell, but not to its parent. Node and the shell from which you invoke Node never see the variable.

blocks|key|833166|text|这至少有两个原因是不起作用的。source是一个Bash+internal+command，默认情况下，节点会派生/bin/sh。即使您告诉child_process.exec生成一个Bash+shell：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|833167|833168|+child_process.exec("ls",+{+shell:+"/bin/bash"+},+(err,+stdout)+=>+())|blockquote|833169|833170|833171|然后，将source'd变量添加到外壳进程的环境中，而不是node.js的环境中。|833172|我不知道您的项目的具体需求是什么，但您最好的选择可能是打开node中的文件并解析其内容，以找到键/值对并以这种方式设置节点的环境。|833173|entityMap|0|LINK|mutability|MUTABLE|url|https://www.gnu.org/software/bash/manual/html_node/Bash-Builtins.html#index-source^0|F|6|1L|7|1Y|I|O|L|0|0|0|1|1X|0|0|0|4|6|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@$9|Y|A|Z|B|C]|$9|10|A|11|B|C]|$9|12|A|13|B|C]]|D|@$9|14|A|15|1|16]]|E|$]]|$1|F|3|-4|5|6|7|17|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|18|8|@$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|1B|8|@]|D|@]|E|$]]|$1|K|3|-4|5|6|7|1C|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|1D|8|@$9|1E|A|1F|B|C]]|D|@]|E|$]]|$1|N|3|O|5|6|7|1G|8|@]|D|@]|E|$]]|$1|P|3|-4|5|6|7|1H|8|@]|D|@]|E|$]]]|Q|$R|$5|S|T|U|E|$V|W]]]]

this is not working for at least two reasons. <code>source</code> is a <a href="https://www.gnu.org/software/bash/manual/html_node/Bash-Builtins.html#index-source" rel="nofollow noreferrer">Bash internal command</a>, and node spawns <code>/bin/sh</code> by default. And even if you told <code>child_process.exec</code> to spawn a Bash shell:

<blockquote>
 <code>child_process.exec("ls", { shell: "/bin/bash" }, (err, stdout) =&gt; ())</code>
</blockquote>

then the <code>source</code>'d variables would be added to the environment of the shell process, not the environment of node.js .

I don't know what the exact specific requirements are for your project but your best bet might be to open the file in node and parse its contents to find key/value pairs and set node's environment that way.

blocks|key|4749821|text|鉴于此，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4749822|4749823|子进程不能修改它的父环境(除非你破解了你的外壳)|blockquote|4749824|4749825|4749826|你能做的最多就是|4749827|4749828|+make+nodejs告诉您的shell如何更新其环境，就像它自己编写脚本一样。|offset|length|style|BOLD|4749829|4749830|4749831|我假设你只对变量而不是函数感兴趣。|4749832|这就是你的解决方案。|4749833|bootstrap.js|4749834|const+childProcess+=+require('child_process');
const+script+=+process.argv[2];
childProcess.exec("env+>+./1.txt;+.+./"%2Bscript%2B"+>/dev/null+2>&1;+env+>+./2.txt;+diff+1.txt+2.txt+%7C+grep+'%5E>'",+(err,+stdout,+stderr)+=>+{
++++stdout.split('\n').forEach((line)+=>+console.log(line.substr(2)));
})|code-block|syntax|javascript|4749835|以及你应该如何称呼它：|4749836|echo+$SOME_VAL+#+empty
eval+`node+bootstrap.js+./file.sh`
echo+$SOME_VAL+#+abcd|4749837|entityMap^0|0|0|0|0|0|0|0|1|R|0|0|0|0|0|0|C|0|0|0|0^^$0|@$1|2|3|4|5|6|7|19|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|1B|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|1E|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]|$1|K|3|L|5|E|7|1G|8|@$M|1H|N|1I|O|P]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|1J|8|@]|9|@]|A|$]]|$1|R|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1L|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1M|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|1N|8|@$M|1O|N|1P|O|P]]|9|@]|A|$]]|$1|Y|3|Z|5|10|7|1Q|8|@]|9|@]|A|$11|12]]|$1|13|3|14|5|6|7|1R|8|@]|9|@]|A|$]]|$1|15|3|16|5|10|7|1S|8|@]|9|@]|A|$11|12]]|$1|17|3|-4|5|6|7|1T|8|@]|9|@]|A|$]]]|18|$]]

Given that

<blockquote>
 a child process cannot modify its parent env (unless you hack your shell)
</blockquote>

the best you can do is

<blockquote>
 make nodejs tell your shell what to do to update its environment as it would have if it had sourced the script itself.
</blockquote>

I assume you are only interested in variables and not functions.

Here is your solution.

bootstrap.js:

<pre><code>const childProcess = require('child_process');
const script = process.argv[2];
childProcess.exec("env &gt; ./1.txt; . ./"+script+" &gt;/dev/null 2&gt;&amp;1; env &gt; ./2.txt; diff 1.txt 2.txt | grep '^&gt;'", (err, stdout, stderr) =&gt; {
 stdout.split('\n').forEach((line) =&gt; console.log(line.substr(2)));
})
</code></pre>

and how you should call it:

<pre><code>echo $SOME_VAL # empty
eval `node bootstrap.js ./file.sh`
echo $SOME_VAL # abcd
</code></pre>

Imagine we have a <code>env.sh</code> with following content.

<pre><code>export SOME_VAL="abcd"
</code></pre>

We want to source this shell script from a JS (node.js) script <code>bootstrap.js</code>.

<pre><code>const childProcess = require('child_process');
const cmd = '. ' + pathToEnvScript;
childProcess.exec(cmd, (err, stdout, stderr) =&gt; {
 if (err) console.error(err);
 console.log(stdout);
})
</code></pre>

Here is how we call the <code>bootstrap.js</code>.

<pre><code>echo $SOME_VAL # empty
node bootstrap.js
echo $SOME_VAL # empty
</code></pre>

Why the sourcing doesn't take any effect? The sourcing works if we call <code>source env.sh</code> from terminal, but doesn't work for <code>node bootstrap.js</code>.

Sourcing a shell script from JS

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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假设我们有一个包含以下内容的env.sh。export SOME_VAL="abcd"我们想从一个JS (node.js)脚本bootstrap.js中获取这个shell脚本。const childProcess = require('child_process');const cmd = '. ' + pathToE...

问从JS获取shell脚本
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